Using this item to expand your Brand. Blank Red Blood Cell stress ball. This stress balls are an excellent giveaway item to promote your blood donation facility. Give these out at blood drives to assist in relaxation and blood flow. The shiny surface enhances the bright red exterior. The middle is concave on both sides, just like a real red blood cell. Bulk prices save you money. Contact us to get a free quote today. Made from pu material, measuring 3. 25 inches, this custom foam red blood cell stress balls. Usage Scenarios: Office supplies, school stationery, corporate promotions, trade show giveaways. Customization available: Print your logo or customize packaging and color schemes. Product Highlights: Portable, durable, practical for daily use. This Foam Red Blood Cell Stress Balls is ideal for your promotional needs. Suitable for trade show gifts and fast delivery service. Reliable lead times ensure timely delivery.